// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_
#define CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_

#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"

namespace gfx {
class Size;
}

namespace v8 {
class Isolate;
class Object;
template <typename T>
class Local;
} // namespace v8

namespace content {

// A delegate for BrowserPlugin which gets notified about the plugin load.
// Implementations can provide additional steps necessary to change the load
// behavior of the plugin.
class CONTENT_EXPORT BrowserPluginDelegate {
public:
    // Called when the BrowserPlugin's geometry has been computed for the first
    // time.
    virtual void Ready() { }

    // Called when plugin document has finished loading.
    virtual void PluginDidFinishLoading() { }

    // Called when plugin document receives data.
    virtual void PluginDidReceiveData(const char* data, int data_length) { }

    // Sets the instance ID that idenfies the plugin within current render
    // process.
    virtual void SetElementInstanceID(int element_instance_id) { }

    // Called when the plugin resizes.
    virtual void DidResizeElement(const gfx::Size& new_size) { }

    // Called when the plugin is about to be destroyed.
    virtual void DidDestroyElement() { }

    // Returns a scriptable object for the plugin.
    virtual v8::Local<v8::Object> V8ScriptableObject(v8::Isolate* isolate);

    // Returns a weak pointer to this delegate.
    virtual base::WeakPtr<BrowserPluginDelegate> GetWeakPtr() = 0;

protected:
    virtual ~BrowserPluginDelegate() { }
};

} // namespace content

#endif // CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_
